FREE Simple to use Online invoice system ! It has PayPal support option. 1.) Secure Admin section plus Client login section. 2.) Add as many clients as needed. 3.) Add as many invoices for each customer as needed. 4.) Invoices self total the inputted data. 5.) You can search through customers or invoices for keywords. 6.) Keeps track of Payments you receive from customers. 7.) Automatic Email Paid Invoice system you can turn on or off. 8.) You or client can create a clean invoice for printing. 9.) 10 separate Items per Invoice plus misc, shipping etc... 10.) Support forum for questions about script.